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Section 2 How Minerals Form

Vocabulary:

solution - a mixture of one substance dissolved in another, and usually is in a liquid.
vein - a mineral, in a narrow channel, that is way different from the surrounding rock.

Outline:

Process That Forms Minerals

• In general minerals from in two ways
  • crystallization of melted material
  • crystallization of materials dissolved in water

Minerals From Magam

• Minerals form as hot lava that cools inside the crust

*Many things affect the size of the crystal

• The rate the magma cools
• The amount of gas in the magma
• The chemical compostion of the magma

Minerals From Hot Water Solutions

• Hot water solution minerals form in a multi-step process
  • First, water goes inside the crust dissolving the minerals
  • Second, the magma heating up the water
  • Third, water comes out and cools making crystals
• Many of these minerals form where techtonic plates split

Minerals formed by Evaporation

• Minerals can also be formed by evaporation
• Several useful minerals are formed by evaporation
  • halite
  • gypsum
  • calite

minerals containing potassium
where minerals are found**

• the crust is made mostly of the common rock froming minerals